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Finding the Fourth Proportional to 4,860.52, 7,290.80 and 1,939.56

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Solution

The fourth proportional to 4,860.52, 7,290.80 and 1,939.56 is: 2,909.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,860.52 : 7,290.80 = 1,939.56 : x
  2. Step 2: Convert to fraction form
    4,860.52/7,290.80 = 1,939.56/x
  3. Step 3: Cross multiply
    4,860.52x = 7,290.80 × 1,939.56
  4. Step 4: Simplify right side
    4,860.52x = 14,140,944.05
  5. Step 5: Solve for x
    x = 14,140,944.05/4,860.52
  6. Step 6: Final answer
    x = 2,909.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.